NHTSA ID Number: 10203502
Manufacturer Communication Number: A21-085
TSB/Document Date: 2021-11-16
Summary
Service Bulletin - In February of 2022, the 3G network will no longer support the in-vehicle services that the vehicle has previously supported. The Telematics Control Unit (TCU) using the Over the Air (OTA) update is required to connect to the VoLTE network to continue communications.
Service Bulletin
21-085
November 9, 2021
Version 1
Product Improvement: Multi-Model 3G OTA TCU Software Update
AFFECTED VEHICLES
Year
Model
Trim Level
VIN Range
2018–20
Accord
Touring/Elite
Check the iN VIN status for eligibility.
2018–20
Accord Hybrid
Touring
Check the iN VIN status for eligibility.
2019–20
Insight
Touring
Check the iN VIN status for eligibility.
BACKGROUND
In February of 2022, the 3G network will no longer support the in-vehicle services that the vehicle has previously
supported. The Telematics Control Unit (TCU) using the Over the Air (OTA) update is required to connect to the VoLTE
network to continue communications.
CUSTOMER NOTIFICATION
Owners of affected vehicles will be sent a notification of this campaign.
Do an iN VIN status inquiry to make sure the vehicle is shown as eligible.
Some vehicles affected by this campaign may be in your new or used vehicle inventory. Repair these vehicles before they
are sold.
CORRECTIVE ACTION
Update the TCU software using the OTA update method.
CUSTOMER INFORMATION: The information in this bulletin is intended for use only by skilled technicians who have the proper tools, equipment,
and training to correctly and safely maintain your vehicle. These procedures should not be attempted by “do-it-yourselfers,” and you should not
assume this bulletin applies to your vehicle, or that your vehicle has the condition described. To determine whether this information applies, contact
an authorized Honda automobile dealer.
© 2021 American Honda Motor Co., Inc. – All Rights Reserved
Page 1 of 9
WARRANTY CLAIM INFORMATION
2018–20 Accord and Accord Hybrid
Operation
Number
Description
Flat Rate
Time
Defect
Code
Symptom
Code
Template
ID
Failed Part Number
0105B9
Update the Display
Audio and TCU
software OTA.
0.3 hr.
6GB00
HBO00
A21085A
39870-TVA-A01
2019–20 Insight
Operation
Number
Description
Flat Rate
Time
Defect
Code
Symptom
Code
Template
ID
Failed Part Number
0105B9
Update the Display
Audio and TCU
software OTA.
0.3 hr.
6GB00
PBN00
A21085B
39870-TXM-A01
NOTE: A warranty claim does not close OTA campaigns. ONLY the vehicle reporting the correct software version to our
servers will close the campaign. Make SURE the vehicle reports correct software prior to releasing to customer and
submitting the warranty claim.
Skill Level: Repair Technician
SOFTWARE INFORMATION
Year/Model
Vehicle
System
Software
Version
Vehicle System
Software
Version
Phone Module
Version
2018–20 Accord
Display Audio
18AA-2186-001
Telematics Control
Unit (TCU)
FDC17.06.005
200.0.9A00
2019–20 Insight
Display Audio
18AE-2186-001
Telematics Control
Unit (TCU)
FDC17.09.004
200.0.9A00
REPAIR PROCEDURE - OTA UPDATE
NOTE:
• Before starting this repair procedure, Do a VIN inquiry to verify any outstanding Product Updates or Open Campaigns
to the Display Audio system have been completed.
• For Accord models, verify service bulletin 18-092, Safety Recall: 2018 Accord Rear Backup Camera Service Bulletin
has been completed before proceeding with this repair.
• Move the vehicle to an open-air area to get optimal cellular signal strength before proceeding with next steps.
•
•
•
Good cellular signal will aid in the update and prevent any Error codes.
This is an update to the Telematics Control Unit (TCU), which depends on a good cellular connection.
There is no need to connect to a WiFi network to proceed with the update.
Page 2 of 9
1. To complete the update, go to the HOME screen, select System Updates, and when the download is complete, select
via Wireless.
2. When the download is complete, System update ready to install will appear.
NOTE: In some instances, the download process may have already occurred. In this case, proceed to step 3.
3. Select Install Now.
Page 3 of 9
4. The first part of the update will start. The Display Audio Installing update process will begin, this takes 2–5 minutes to
complete.
NOTE: The system will reboot once the progress bar reaches 100 percent.
5. Wait for the HondaLink and Disclaimer screens to appear and select OK.
6. Once the update completes, you will see Installation of new software complete, then select OK.
NOTE: If you see (Could not install some updates.) during the update, start from Step 1 to repeat the process.
Page 4 of 9
7. After selecting OK, the system will start the second part of the update. Wait for System update ready to install. This
does not immediately occur, this may take about 5–10 minutes.
NOTE: If System update ready to install does not appear, manually check for the second update by selecting
System Updates, via Wireless. The download process will begin.
8. From the HOME screen select System Updates, to very software update is ready. Select Install Now.
9. The second part of the update will start. The TCU update process takes 15–25 minutes to complete depending on
cellular signal strength.
NOTE: The installing progress bar will count to 100% and the LED indicator located in the dome light console will blink.
Page 5 of 9
10. Once the update completes, you will see Installation of new software complete, then select OK.
NOTE: If you noticed only one update occurred following the reprogramming, select System Updates, via Wireless
and check if the system returns with Your system is up to date. One of the two components may have previously
been updated, refer to the SOFTWARE VERSION VERIFICATION – Display Audio and TCU section to confirm
software versions.
SYSTEM UPDATE FAILED
NOTE: If you see System Update Failed during the update process, the software update may have failed due to poor
cellular signal.
Make sure the vehicle is in an open-air area to get optimal cellular signal strength.
Page 6 of 9
SOFTWARE VERSION VERIFICATION – DISPLAY AUDIO AND TCU
1. For Accord models press HOME, POWER, and SOURCE at the same time.
For Insight models press HOME, REWIND, and Power at the same time.
2. From Diagnostics Menu screen, select DETAIL INFORMATION & SETTING.
Page 7 of 9
3. Select Version.
4. In the Version screen note the Build Number.
Model
Part Number
Software Version
Accord
39540-TVA-A57
18AA-2186-001
Insight
39540-TXM-A83
18AE-2186-001
5. Select Return to be brought back to the Detail Information & Setting screen, then select Unit Check.
Page 8 of 9
6. Scroll down to Select TCU.
7. Confirm the TCU SW as Follows:
TCU Software Version:
Model
Part Number
Software Version
Phone Module Version
Accord
39870-TVA-A01
FDC17.06.005
200.0.9a00
Insight
39870-TXM-A01
FDC17.09-004
200.0.9a00
8. Select Return four times to exit back to the HOME Screen.
NOTE: If software versions do not match, it is recommend to replace TCU. Follow the REPAIR PROCEDURE - TCU
REPLACEMENT
REPAIR PROCEDURE - TCU REPLACEMENT
When replacing the TCU, make sure to do the HDS registration of the new TCU to the Keyless Access (immobilizer)
System. Follow the procedure below or refer to the Keyless Access System Registration procedure found in the Service
Information (SIS).
1. Connect the HDS to the DLC.
2. When all remotes are lost, select Immobilizer Setup Tool, and turn the vehicle to ON mode according to
the instructions on the HDS screen, then go to step 5.
3. Turn the vehicle to the ON mode and select Immobilizer Setup Tool.
4. Select the appropriate items, then do the registration according to the instructions on the HDS screen.
5. After registration, verify the affected systems work normally with all remotes.
6. Complete the REPAIR PROCEDURE - OTA UPDATE in this service bulletin.
END
Page 9 of 9
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TSB/Document ID: A21-085
Replacement Service Bulletin Number:
MFR Communication Date: 2021-11-09
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
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